Host genotype and hypersensitive reaction influence population levels of Xanthomonas campestris pv. vitians in lettuce

Carolee Theresa Bull, Samantha J. Gebben, Polly H. Goldman, Mark Trent, Ryan J. Hayes

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Dynamics of population sizes of Xanthomonas campestris pv. vitians inoculated onto or into lettuce leaves were monitored on susceptible and resistant cultivars. In general, population growth was greater for susceptible (Clemente, Salinas 88, Vista Verde) than resistant (Batavia Reine des Glaces, Iceberg, Little Gem) cultivars. When spray-inoculated or infiltrated, population levels of X. campestris pv. vitians were consistently significantly lower on Little Gem than on susceptible cultivars, while differences in the other resistant cultivars were not consistently statistically significant. Populations increased at an intermediate rate on cultivars Iceberg and Batavia Reine des Glaces. There were significant positive correlations between bacterial concentration applied and disease severity for all cultivars, but bacterial titer had a significantly greater influence on disease severity in the susceptible cultivars than in Little Gem and an intermediate influence in Iceberg and Batavia Reine des Glaces. Infiltration of X. campestris pv. vitians strains into leaves of Little Gem resulted in an incompatible reaction, whereas compatible reactions were observed in all other cultivars. It appears that the differences in the relationship between population dynamics for Little Gem and the other cultivars tested were due to the hypersensitive response in cultivar Little Gem. These findings have implications for disease management and lettuce breeding because X. campestris pv. vitians interacts differently with cultivars that differ for resistance mechanisms.

Original languageEnglish (US)
Pages (from-to)316-324
Number of pages9
JournalPHYTOPATHOLOGY
Volume105
Issue number3
DOIs
StatePublished - Mar 1 2015

Fingerprint

Xanthomonas campestris pv. vitians
Xanthomonas campestris
Lettuce
hypersensitive response
Ice Cover
lettuce
Genotype
genotype
cultivars
Population
icebergs
Population Growth
Population Dynamics
Disease Management
Population Density
Breeding
disease severity
leaf lettuce
resistance mechanisms

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Plant Science

Cite this

Bull, Carolee Theresa ; Gebben, Samantha J. ; Goldman, Polly H. ; Trent, Mark ; Hayes, Ryan J. / Host genotype and hypersensitive reaction influence population levels of Xanthomonas campestris pv. vitians in lettuce. In: PHYTOPATHOLOGY. 2015 ; Vol. 105, No. 3. pp. 316-324.
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Host genotype and hypersensitive reaction influence population levels of Xanthomonas campestris pv. vitians in lettuce. / Bull, Carolee Theresa; Gebben, Samantha J.; Goldman, Polly H.; Trent, Mark; Hayes, Ryan J.

In: PHYTOPATHOLOGY, Vol. 105, No. 3, 01.03.2015, p. 316-324.

Research output: Contribution to journalArticle

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